The Elberfeld system
Publisher: [s.n.]
Published: 1903
Place of publication: [s.l.]
Language: eng
Number of pages: 28
Subjects: Elberfeld system
Notes: "Occasional paper, No. 20. Third series."

Author's name given as C. S. Loch on p. vi, Occasional papers of the C.O.S, Third series, 1905.